From: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Date: Mon, 19 Jan 2015 11:27:24 +0000 (+0100)
Subject: gpio: gpio-mm-lantiq: Use of_property_read_u32
X-Git-Tag: v4.14-rc1~5979^2~17
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=68a99b187df3f4675f22a4a3f54c9d7645ab6409;p=platform%2Fkernel%2Flinux-rpi.git

gpio: gpio-mm-lantiq: Use of_property_read_u32

Instead of parsing manually the shadow content, use the much simpler
helper of_property_read_u32.

Cc: Alexandre Courbot <gnurou@gmail.com>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: John Crispin <blogic@openwrt.org>
Cc: devicetree@vger.kernel.org
Cc: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---

diff --git a/drivers/gpio/gpio-mm-lantiq.c b/drivers/gpio/gpio-mm-lantiq.c
index 7d55161..95ff180 100644
--- a/drivers/gpio/gpio-mm-lantiq.c
+++ b/drivers/gpio/gpio-mm-lantiq.c
@@ -105,7 +105,7 @@ static void ltq_mm_save_regs(struct of_mm_gpio_chip *mm_gc)
 static int ltq_mm_probe(struct platform_device *pdev)
 {
 	struct ltq_mm *chip;
-	const __be32 *shadow;
+	u32 shadow;
 
 	chip = devm_kzalloc(&pdev->dev, sizeof(*chip), GFP_KERNEL);
 	if (!chip)
@@ -117,9 +117,8 @@ static int ltq_mm_probe(struct platform_device *pdev)
 	chip->mmchip.save_regs = ltq_mm_save_regs;
 
 	/* store the shadow value if one was passed by the devicetree */
-	shadow = of_get_property(pdev->dev.of_node, "lantiq,shadow", NULL);
-	if (shadow)
-		chip->shadow = be32_to_cpu(*shadow);
+	if (!of_property_read_u32(pdev->dev.of_node, "lantiq,shadow", &shadow))
+		chip->shadow = shadow;
 
 	return of_mm_gpiochip_add(pdev->dev.of_node, &chip->mmchip);
 }